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N0 Model.) 4 Sheets-Sheet 1.

. D. JONES.

SEWING MACHINE.

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(No Model.) 4 Sheets-Sheet 2. D. JON BS. SEWING MACHINE.

No. 449,539. Patented Mar. 31, 1891.

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(No Model.)

SEWING MAGHINE.

No. 449,539. Patented Mar. 31,1891.

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(No Mode.) 4-S11eets-Sheet 4.

D. JONES.l

SEWING MACHINE.

No. 449,539. Patented Mar. 31, 1891.

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NTTED STATES PATENT Fries.

DANIEL JONES, OF CARDIFF, ENGLAND.

SEWING-MACHINE.

SC'IFIA'IO forming part of' lI.etters Patent No. 449,539, dated March 31, 1891.

Application tiled November 4, 1889. `Serial No. 329,243.

To all whom it may concern:

Be it known that I, DANIEL JONES, a suba ject of the Queen of Great Britain and Ireland, residing at Cardiff, Wales, Kingdom of Great Britain and Ireland, have invented certain new and useful Improvements in Lock- Stitch Sewing-Machines, (for which Letters Patent have been .granted in Great Britain, No. 9,089, dated June 1, 1889; in Belgium, No. 91,414, dated July 28, 1890; in France, No. 204,321, dated March 12, 1890, and in Switzerland, No. 1,709, dated November 23, 1889,) of which the following is a specification.

My invention has reference to two-reel lockstitch sewing-machines. In such a machine, according to this invention, a rotary looper comprising a peculiarly-formed hook at the rear and a nose or guard in front, is used in conjunction with a take-up in such a manner that when a loop has been carried by the hook partly around the reel carrier or container a part of the loop will be taken up by the take-up, so that the loop will clear the hook and the rest of such loop will be subsequently taken up by the action of the hook during the formation' of the succeeding loop, and so on, thus obviating the friction of the thread upon the looper that obtains in other lock-stitch sewing-machines. The hook is formed inward at the rear of the looper. It points in the direction of rotation, and is so shaped that after engaging with aloop itwill in its progress spread out such loop. The nose or guard serves to prevent the hook reengaging the lower portion of a loop that has been carried partly around the carrier and released. The lower reel is placed in a carrier of cup shape that is freely supported in a holder in such a manner that loops of thread can pass around the carrier between it and the holder, as well understood. The holder is carried by an arm articulated to a bracket or part of the machine, so that it can he turned into a position in which the reel-carrier can be readily placed in or removed from the holder, and a catch is provided for keeping the reel-carrier in its holder. A second catch is so arranged that when the holder is in position for use with the first-mentioned catch in place over the reel-carrier the sec- (No model.) Patented in England June 1, 1889, No. 9,089; in

1890, No. 204,321J and in Belgium July 28, 1890,

ond catch will serve to lock both the holder and the catch that keeps the carrier therein.

Figure 1 shows in side elevation, with parts in section, so much of a two-reel sewing-machine as is necessary to illustrate the application of myinvention. of that end of the machine shown to the left in Fig. 1, with the front cover removed. Fig. 3 is an end view of the looper, showing in full lines the position the looper occupies when passinga loop onto the reel carrierorcontainer, andindicates the corresponding position of the needle end. The dotted lines show approximately the position of the looper and needle while a loop of thread is being disengaged from the hook of the looper. Fig. 4 is a side View correspondingto Fig. 2. Fig. 5 is an end viewof the Fig. 2 is an elevation looper in the position it occupies while entering aloop. Fig. 6 is aside elevation corresponding to Fig. 5. Fig. 7 is a view of the looper alone, corresponding to Fig. 5, but omitting that part shown below the dotted linein Fig. 8. Fig. 8 is a development of the looper, except that the rearward hook is represented as turned inward so as to point, as it does in the actual looper, in the direction of rotation. Fig. 9 is anvelevation of the reel-carrier. Fig. 10 isa plan of the same. Fig. 11 shows in plan the reel-carrier with its holder and the means for carrying and holding the same in position. Fig. 12 is a side elevation of the parts illustrated in Fig. 11, but shown turned into positions to admit of the reel-carrier (not shown) being readily placed in or removed from the holder. Figs. 1 and 2 are drawn to a smaller scale than the remaining igures.

1 is the main driving-shaft, mounted in bracket-bearings 2 3 below the bed-plate 4.

5 is an arm clamped to the end of the drivin g-shaft 1. To this arm my improved looper is secured, as clearly illustrated in Figs. 3 to 6, inclusive. This looper comprises a peculiarly-formed hook 6 at the rear, and a nose or guard 7 in front. As will be seen, the hook 6' is formed inward at the 'rear of the looper .and points in the direction of'rotation. The office of this hook is to engage with a loop presented by the needle and to carry it down and partly around the carrier 8, and then on arriving at or approximately at the position IOO indicated in dotted lines in Figs. 3 and to release the loop, which is then partly gathered up by the take-up 0, while a fresh loop is being presented preparatory to being engaged by the hook 6. On engaging with a newly-formed loop the hook 6, as it proceeds to draw out that loop and carry it around the carrier S, will in so doing take up so much of the previously-formed loop as was not gathered by the take-up. The office of the guard 7 is to prevent the hook re-engaging the portion of a loop that has been carried partly around the carrier and released.

lt will be understood that approximately half of each loop formed around the carrier is formed from that part of the preceding loop thatI was not taken up bythe take-up.

The take-up D is a lever pivoted at 11 and provided with a pin 11, that takes into a eamgroove 12 in a crank-disk 13, that is secured to the needle-driving shaft 14, and also serves to reciprocate the needle 1/12 By this arrangement the take-up is driven positively.

The talle-up and the looper may be so relatively arranged and operated that the outer end D of the takeup, through which the sewing-thread passes, will descend and leave the part of the thread between this outer end 9 and the eye of the needle slack when the needle descends to form a loop. This end ofthe take-up will then remain nearly stationary, while the hook 6 engages the loop and is carrying the saine around the carrier sutliciently far to take up so much of the previously-formed loop as was not gathered by the take-up 9 and also du ri ng a further small part of a revolution of the looper, during which time the hook will draw from the reel sufiicient thread to form a stitch, The end 9 of the take-up then descends and supplies the length of thread it previously gathered up, and thus enables the hook 6 to pass the loop of thread held thereby around the reel carried. Then the looper arrives in the position shown approximately in dotted lines in Figs. 3 and 4:, the outer end 6 of the take-up rises and draws the loop oft the hook 6 and partly gathers up the same. As the looper continues to revolve, the guard 7 comes in contact with the portion o1' the loop not taken up by the previous upward motion of the take-up and holds it out of the path of the hook 6, which will enter a fresh loop presented by the needle, when the above* described operations will be repeated. lt is, however, advantageous to so operate the takeup that while the hook 6 is drawing up that part of the previously-formed loop not gathered up by the take-up this take-up will descend so that the part of the loop which it previously gathered up will be free to be drawn up by the hook. By this arrangement when the hook is passing a loop around the reel-carrier the thread will not slide on the hook and friction between the thread and hook will consequently be avoided.

The carrier 8 (illustrated in Figs. 9 and 10) is of known construction, being similar to that described in the specification of my previous British patent, No.3,at28 ot` 1635, and is freely supported in a holder in such a manner that loops of thread can pass around the carrier between it and the holder, as well under-- stood. The holder 15 is cylindrical in forni, but divided at 15L for the entrance of loops of thread. At the side opposite to the opening 15n the holder is formed with a recess 15J of suiiicient depth to enable the looper-hook to assume a position in which a loop of thread thereon will be disengaged bythe takeup device before it can be bent around the lower edge of the holder by the onward movement of the looper-hook. This holder 15 is, according to my presentinvention, carried by an arm 16, articulated at 16 to a bracket 17, so that it can be moved from the position it occupies when the machine is in use, and shown in Figs. 1, 2, and 11, to that shown in Fig. 12, in which the reel carrier can be readily placed in or removed from the holder.

18 is a catch for keeping the reel-carrier S in position within its holder. This catch, which is pivoted at 18:5' to the arm 1.6, is formed with a notch 19, adapted to receive a proj ect ing part 20 of the carrier to prevent the same rotating, and with projecting ears 21, that serve to confine the carrier within its holder. These ears 21 are arranged a short distance above the top edge of the rcel-carrier, so that loops of thread can pass freely between them and the reel-carrier.

22 is a second catch, so pivoted to the bracket 17 that when the catch 18 has been turned into position over the reel-carrier and the arm 16 and holder are in positions for use, as shown in Figs. 1, 2, and 11., it can bc turned into the position shown in these gures, in which it will lock both the catch 18 and the arm 16 in place.

The machine is provided with a tension device 23, of suitable construction, and with feeding mechanism (not shown) that may be operated from a cam 24C, and may also be of any suitable construction, as well understood.

That l claim is-m 1. In atwo-reel lock-stitch sewing-machine, the combination of a reel-carrier 8, provided with a projecting part 20, a holder 15 to receive said carrier, an articulated arm 16, to which said holder is secured, and which is capable of being turned outward from beneath the bed-plate of the machine, a catch 18, pivoted to said arm, formed with a notch to receive the projecting part of said reel-carrier, and with proj ecting ears arranged to overlap the top of said reel-carrier when in its closed position, and a catch 22, pivoted to a fixed part of the machine and capable of holding said catch 1S and said arm 16 in their closed positions for use, substantially as herein described.

2. In a lock-stitch sewing-machine, the combination of an open cylindrical holder 15, split or open at one side at 15a and having diamctricallyopposite recess 15, a reel-can lOO rier, a swinging armv 16, pivoted to a support vand carrying said holder, and catch 22, ar-

ranged to hold said arm and holder in normal position, substantially as described.

3. In a sewing-machine, the combination of the rotary looper, the open cylindrical holder, a swin ging arm carrying said holder and pivoted to a support, means, substantially as described, for locking said arm in-its normal position, the reel-carrier within said holder having projection 19, and the swinging catch 18,pivoted to said swinging arm to receive said projection and hold the carrier in the holder, substantially as described.

4. In a sewing-machine, the combination of a needle, takelup mechanism, substantially as described, lower reel-carrier and holder therefor, and the rotary looper and its shaft, said looper consisting of the arm extending beside and rotating around said reel-carrier and having the rear inturned hook on its under side projecting in the direction of rotation and the front nose 7, as set forth.

5. In a sewing-machine, the combination of a needle, a reel-carrier and its holder, a looper arranged to revolve around said carrier and having the inturned hook on its rear side projecting in the direction of rotation, land the guard for said hook, a take-up de vlce, substantially as described, and a cam mechanism to operate said take-up to disengage a loop from the hook and to draw up a portlon only of said loop.

6. The combination of. a needle, reel-carrier and its holder, the rotary looper revolving around said carrier and consisting of rear hook 6 and forward guard and nose 7 shaft 1, driving same, shaft 14, cam mechanlsm 13', and take-up 9, operated by said cam mechanism, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DANIEL JONES.

.Witnessesz EDW. G. CAINES,

122 Bute St., Card/yf Accountant. E. T. LYDDEN,

Oardz'jj, Stock-Broker. 

